Henriquez joined United last summer before being sent on loan in January to Wigan Athletic - where he struggled to make an impact after making just four Premier League appearances and scoring once.
But Moyes got his first look at Henriquez in action on Tuesday as he scored for United in their 1-1 draw at AIK Stockholm.
"He didn't come on tour with us so this was the first time I had a chance to see him," said Moyes.
"He was ready when we came back from the tour and I thought he did well.
"Now we'll get the chance to work with him."